About 13,000 homes and business in Brisbane, Ipswich and Somerset were left without power as rain, hail and lightning struck the region at about 11am (AEST) on Saturday.

In Ipswich, a small grass fire was sparked when lightning struck a crane next to the city's hospital just after 10am but the incoming rain extinguished it, a Department of Community Services (DCS) spokeswoman told AAP.

In Ann Street in the CBD, a hotel roof collapsed under the storm while another 72 calls for assistance were made asking for help with leaking roofs and fallen trees,

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"It turned day into night," a SES worker said.

"It came quickly and then it left."

By 6.30pm about 300 homes remained without power, with the majority of the outages continuing in the Algester area south of Brisbane.

An Energex spokeswoman said they were unsure as to when power would be returned to the area as the repairs were "complicated".

"We are working through the problems and doing it as quickly as we can," she said.

More than 11,000 lightning strikes were recorded across Queensland's southeast since 10am, with Energex receiving reports of more than 100 powerlines down.

Despite the widespread outages, the situation was not as bad as they have seen, the spokeswoman said.

"In our storm season we can see 20,000 to 30,000 lose power so 13,000 is really reasonable for us," she said.

But she said Energex was looking towards Toowoomba to see if the second forecast storm would wreak more damage.

On Saturday evening the Bureau of Meteorology (BoM) was continuing to send out severe weather warnings for much of the state.

"Very dangerous thunderstorms" were detected at a weather radar near Oakey, west of Brisbane, at about 6.30pm.

The thunderstorms were forecast to move towards the northeast and to hit Haden, Cooyar and the area north of Crows Nest, Blackbutt, Yarraman and the area north of Cooyar.

"Destructive winds, heavy rainfall that may lead to flash flooding and large hailstones are likely," the BoM said.

The BoM said severe thunderstorms were also likely to produce damaging winds over the next few hours in parts of the Northern Goldfields and Upper Flinders, Central Highlands and Coalfields, Central West and Maranoa and Warrego districts.

People in Warwick, the Gold Coast, Toowoomba, Brisbane, Dalby, Coolangatta, Ipswich, the Moreton Bay islands, Kingaroy, Stanthorpe, Caloundra and Taroom were warned just before 8pm (AEST) to brace themselves for wild weather over the following hours.

Along the southeast, the BoM said "very dangerous" storms were detected near Esk and Lake Wivenhoe, with the front moving towards the northeast.

The wild weather was also forecast to hit the D'Aguilar Ranges, Dayboro and Mount Mee north of Brisbane by 9.15pm.

In the hour leading up to 8pm, the BoM recorded 65mm of rainfall at Buaraba, west of Brisbane.

But the BoM said severe thunderstorms were no longer occurring in the Northern Goldfields and Upper Flinders, Central West and Maranoa and Warrego districts.

As the storm continues to lash Queensland, Energex said more than 1000 homes and businesses were without power in the Lockyer Valley area west of Brisbane.